P1173 — Mazda — HO2S Bank 2 Sensor 1 Circuit Fixed Bank 2 Sensor 1

P1173 (Mazda): HO2S Bank 2 Sensor 1 Circuit Fixed Bank 2 Sensor 1 — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

HO2S Bank 2 Sensor 1 Circuit Fixed Bank 2 Sensor 1. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain